Blind SNR Estimation with Coherent Function for OFDM Systems

被引：1
|
作者：
Chin, Wen-Long [1 ,2 ]
Chen, Sau-Gee [1 ,2 ]
机构：
[1] Natl Chiao Tung Univ, Dept Elect Engn, Hsinchu 30050, Taiwan
[2] Natl Chiao Tung Univ, Inst Elect, Hsinchu 30050, Taiwan
来源：
IEICE TRANSACTIONS ON COMMUNICATIONS | 2008年 / E91B卷 / 11期
关键词：
OFDM; SNR estimation;
D O I：
10.1093/ietcom/e91-b.11.3753
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In OFDM receivers, an accurate signal-to-noise ratio (SNR) estimation is desirable for all sorts of operations involved in high-performance baseband demodulation. In this work. conventional SNR estimation techniques are investigated. Next, a blind SNR estimation scheme for the phase-shift keying (PSK) signals based on the coherence function is proposed. The proposed method is non-data-aided (NDA) and hence bandwidth-efficient. Simulations confirm that the proposed method has the best performance from moderate to high SNRs both in AWGN and dispersive channels: however. the proposed method has worse performance when SNRs are low.
引用
收藏
页码：3753 / 3756
页数：4
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